Furnace



D. MARTIN FURNACE I March 13, 1928.-

INVENTQR BY QQMIQRQAXW/ I AEETTORNEY7 u N n Filed Nov. 27

Patented Mar. 13, 1928.

UNITED STATES DAVID MARTIN, F MILWAUKEE, WISCONSIN.

, FURNACE.

Application filed November 27, 1926. Serial No. 151,059.

This invention relates to a new and useful device in the nature of a grate shaking device for furnaces.

The object of the invention is to provide a grate shaking device of novel construction and arrangementcf parts, hereinafter more fully described, claimed and illustrated in the accompanying drawings in which:

Fig. 1 shows a front elevational VIBWO'E a furnace embodying my improved device, partly fragmentary so as to expose certain interior parts.

Figs. 2 is a longitudinal partly sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a transverse sectional plan view taken on the line 33 of Fig. 1.

Fig. 4 is an enlarged fragmentary detail tubes 14, the fire door hinged to the outer. casing 10, the ash door 16 similarly attached to the outer casing 10, at or near the lower end thereof, are the conventional elements of a furnace such as is generally employed for heating purposes. It being understood that I do not necessarily limit the use of my invention to furnaces of the type above described and set forth, but to all classes of furnaces such as ordinarily used for all purposes.

As here embodied my improved device comprises a lever 20, pivotally attached at one extremity, as at 21, to the sector member 22. The lever 20 is provided with a handle 23 and has adjacently pivoted thereto, a lever 24, to which is pivotally attached a rod 25, extended lengthwise of the first mentioned lever 20. The lower extremity of the rod 25 is normally held in engagement with any desired one of the notches 26 formed in the sector member 22 by means of the expansion spring 27, positioned or wound on the rod 25 and superimposed between the lugs 18 and 29 of the lever 20, in which the rod 25 is slidably mounted. The above described construction being such as will permit the lever 20 to be pivoted when the lever 24 is pressed or forced inwardly againstthe handle 23, which will disengage the rod 25, which normally holds the lever 20 in any desired fixed position.

The arm 30 is pivotally attached at'its extremities intermediate the extremities of the lever 20 and to one extremity of the lever- 31. The lever 31 is pivotally attached, as at 32, to the extended element 33 of the sector member 22. The elongated aperture 33 is formed intermediate the extremities of the lever 31. i

The pin 34 is slidably engaged in the elongated aperture 33 and is provided with-an enlarged head 35 and has threadedly attached thereto a threaded member 39, a nut or the like, a means of holding the pin 34 in any desired position in the said elongated slot. The rod 35 is pivotally attached at its extremity, to the extendedelement 37( of the pin 34, which is provided with a threaded axial aperture to receive the threaded member 38, a machine screw or the like, as a means of holding the rod 35 in place. The above described construction being such as will permit the movement of the rod 35 to be varied or changed as may be desired, by sliding the pin 34 in the elongated aperture 33. The rod 35 is pivotally attached atone extremity to the lever 36, which is attached to the shaft 37, rotatively mounted in a support 37 attached to the lining 38 or bed of the ash pit. It being understood that the sector member 22 is mounted on the floor surface, adjacent to the furnace, and that the rod 35 is extended inside the furnace, in the ash pit, preferably in proximity to the rear portion of the inner casing 11. The gear 38 is attached to the shaft 37 and meshes with teeth formed or cut in the rack bar 39, slidably mounted in the supports 40 and 41 attached to the outer casing 11. 'The rack bar 39 is provided with second teeth 42 and mesh with the segment gears 43 attached to the grate bars 44, rotatively mounted in the furnace, as is customary practice. The grate bars 44 are positioned in alignment with and between the horizontalportions 45 of the fire box heating flues 14, such as generally used in furnaces.

The above described construction being such as will permit the lever 20 when piv-- oted, to rock the grate bars 44, as may be required to shake the said grate bars.

It is obvious that I have provided ameans of uniformly and evenly shaking a plurality of grate bars, so as to maintain an even and uniform fire bed, as is highly desirable and in accord with greater efficiency.

It is further obvious that I have provided a means of varying or changing the amount of the said uniform movement, as is desirable to prevent; the dumping of the tire when fine grades of coal are used.

Having thus described my invention, What I claim as new and desire to protect by Letters Patent of the United States is as follows:

1. In a furnace of the class described, spaced apart rotatively mounted grate sections having gear segments attached thereto, a rod disposed within said furnace and slidahly mounted at its extremities in the walls thereof, teeth on the upper edge of said rod engaged with the teeth of said gear segments. a standard mounted in the iloor of. said i'urnace having an aperture therein, a shaft; journaled in said aperture. :1 gear attached to said shaft. teeth on the lower edge of said slidably mounted rod meshed with the teeth of said gear and actuating mechanism operatively connected with said gear and mounted externally ol' said furnace for Oscillating the same to reciprocate said rod for rotating said grate section.

2.111 a furnace of the class described,

spaced apart grate sections disposed across the interior thereol and rotatively mounted thereon. gear segments mounted on the rear ends of said grate sections, a standard mounted on the floor of said furnace adjacent the rear wall thereof, a shaft rotative- 1y mounted on said standard, a gear rigidly mounted on said shaft, a rod slidahly mounted at its extremities in apertures in the sides of said furnace and disposed across the rear thereof comprising upper rack teeth meshed with the teeth of the gear segments of said grate sections and lower l'tltfh teeth meshed with the teeth of said gear, a eranl; attached to said shaft for rotating! the same. a linlt' attached to said cranl: and extemling t'orwardly through the front wall of said 't'urnaee. and actuating meehanism operatively connected with said link and disposed externall of said furnace for reeiprocatiit; said rod to rotate said grate sections.

in testimony whereof TI have aflixed my signature.

DAVID MARTIN. 

